Purchased Game Packs Not Showing In-Game / Not Selectable in Pack Selection

Hi, I’m having an issue with The Sims 4. My Game Packs appear as installed in the EA App (The Sims 4 > Manage > Add-Ons) but in the game they do not show up in the Pack Selection screen, so I cannot use them. I own The Sims 4 on both Steam and EA, but it is currently only installed through the EA App, and the DLC was purchased on EA, not Steam. I have already tried restarting the EA App and my PC, repairing the game, logging out and back in, and uninstalling and reinstalling The Sims 4, but nothing helped. I am using Windows 10 on PC, with the latest version of the EA App and an up-to-date version of The Sims 4. Please help me restore access to the packs I purchased. Thank you.